Question

The first and second numbers are 80% and 50% less than the third number. By how much percentage the first number should be increased so that it equals the second number?
1. 100
2. 150
3. 200
4. 140

Answer 1

Correct Answer - Option 2 : 150

Let the third number be 100x

⇒ The first number = 100x × 20% = 20x

⇒ Second number = 100x × 50% = 50x

Equation (II) − (i) = 50x - 20x = 30x

∴ Required percentage = 30x/20x × 100 = 150%